Could be bogus, but it could also be that they had those vocal lines and other musical ideas before they were out on their solo albums.

In the FAQ section that's how the guy explains that criticism.

But the science of going to another dimension, should one even exist, just isn't plausible. Who's to say they wouldn't just explode in a shower of photons as soon as they crossed over? Essentially, they're matter skipping through some antimatter, so that's what should logically occur.

But the science of going to another dimension, should one even exist, just isn't plausible. Who's to say they wouldn't just explode in a shower of photons as soon as they crossed over? Essentially, they're matter skipping through some antimatter, so that's what should logically occur.